Before you start downloading a patch, configure the downloading options in the Configuration page.
It is important that your organization determines a strategy for testing patches before release; this will vary from organization to organization, but should be in line with your current security policies. How you decide to test your patches before deployment will depend on your current architecture and policy. In some organizations it may be required to review your policies in order to effectively use this method.
However, it is highly recommended that patches are tested prior to deployment. For information on setting up test devices to implement patch policies, see Test a Policy Before Deploying to a Live Environment.